(a) Derive an expression for the force per unit length acting on a straight conductor…

PHYSICS · Subjective · AP · Physics 2: Algebra-based · Magnetism and Electromagnetism · Magnetism and Electromagnetism

Problem

(a) Derive an expression for the force per unit length acting on a straight conductor carrying current

I_{2}

placed at a perpendicular distance

d

from another long straight conductor carrying current

I_{1}

, both currents flowing in the same direction in air. (b) A straight conductor of length

\ell =5\,\text{cm}

carrying a current of

15\,\text{A}

is parallel to and

3\,\text{cm}

away from a very long conductor carrying

25\,\text{A}

in the same direction. Calculate the magnitude of the force on the finite conductor and state whether the force is attractive or repulsive.